PISTON ASSEMBLY FOR A PRESSURE-PRODUCING DEVICE OF A BRAKE SYSTEM OF A MOTOR VEHICLE

摘要

The present invention relates to a piston assembly (5) for a pressure generating device (12) of a brake system (1) of a motor vehicle, said piston assembly being inserted into an opening (14) formed in a hydraulic unit (20) of the brake system (1) an at least partially inserted and axially displaceable piston (10) and a ball screw drive (16) for axial displacement of said piston (10). The piston 10 is connected with an axially displaceable spindle 17 of the ball screw drive 16 such that the piston cooperates with the axially displaceable spindle 17 of the ball screw drive 16 , wherein the piston 10 ) in the first entry position P1 , the piston 10 at least surrounds the first partial region T1 of the nut 23 , and in the second entry position P2 of the piston 10 , the piston 10 extends at its maximum Surrounding the second partial region T2 of the raw nut 23 , the first partial region T1 is larger than the second partial region T2 . A corresponding pressure generating device, a hydraulic unit, a brake system and a method for assembling a piston for the pressure generating device are likewise disclosed.